That scares the C R A P out of me. I'm planning on having a tubal and I can't imagine if I had one slip through. I think I would go crazy!!!! Take a test and let us know what you find out.
My mothers cousin had 2 kids, a girl, then a boy. After the second one was born she had her tubes tied. Both of their kids were around 8 and 9 when she found out she was pregnant. They were in shock. So it's absolutely possible. As a matter of fact there was a woman who posted this past week saying she was definitely pregnant and she had her tubes clamped 10 months ago! Apparently someone screwed up or it came undone somehow. If you're having colostrum I would think you'd be far enough along to test positive though. So idk.